Patents by Inventor Atsushi Ishizaki
Atsushi Ishizaki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11651176Abstract: An image evaluation system includes an image forming apparatus and an information processing apparatus. The image forming apparatus prints a reference document including pattern images. The image forming apparatus prints, on the reference document, a check region including check items with respect to the image quality of the printed result. The image forming apparatus reads the printed reference document to generate reference document data. The image forming apparatus transmits the generated reference document data to the information processing apparatus. Based on the received reference document data, the information processing apparatus recognizes a check item selected in the check region.Type: GrantFiled: January 25, 2022Date of Patent: May 16, 2023Assignee: KYOCERA Document Solutions Inc.Inventors: Yoshiaki Ikebata, Atsushi Ishizaki, Lin Lu, Ayumi Nakano
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Publication number: 20220245411Abstract: An image evaluation system includes an image forming apparatus and an information processing apparatus. The image forming apparatus prints a reference document including pattern images. The image forming apparatus prints, on the reference document, a check region including check items with respect to the image quality of the printed result. The image forming apparatus reads the printed reference document to generate reference document data. The image forming apparatus transmits the generated reference document data to the information processing apparatus. Based on the received reference document data, the information processing apparatus recognizes a check item selected in the check region.Type: ApplicationFiled: January 25, 2022Publication date: August 4, 2022Applicant: KYOCERA Document Solutions Inc.Inventors: Yoshiaki IKEBATA, Atsushi ISHIZAKI, Lin LU, Ayumi NAKANO
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Publication number: 20210318650Abstract: It is an object of the present invention to diagnose image quality of a print image without using an open communication network and output the print image, a diagnosis result of image quality, and information of the print parameters while avoiding disclosure of confidential information to users. A test print control portion causes a print device to execute a test print process to form a test image on a sheet. An image quality diagnosis portion diagnoses image quality of the test image included in the image read by an image reading device. A code image generating portion generates a code image that represents information of print parameters adopted in the test print process. An output control portion causes an output device to output a diagnosis image that includes an image representing a diagnosis result of image quality of the test image, and the code image.Type: ApplicationFiled: August 27, 2019Publication date: October 14, 2021Inventors: Lu Lin, Atsushi Ishizaki
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Patent number: 11126125Abstract: It is an object of the present invention to diagnose image quality of a print image without using an open communication network and output the print image, a diagnosis result of image quality, and information of the print parameters while avoiding disclosure of confidential information to users. A test print control portion causes a print device to execute a test print process to form a test image on a sheet. An image quality diagnosis portion diagnoses image quality of the test image included in the image read by an image reading device. A code image generating portion generates a code image that represents information of print parameters adopted in the test print process. An output control portion causes an output device to output a diagnosis image that includes an image representing a diagnosis result of image quality of the test image, and the code image.Type: GrantFiled: August 27, 2019Date of Patent: September 21, 2021Assignee: KYOCERA Document Solutions Inc.Inventors: Lu Lin, Atsushi Ishizaki
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Patent number: 10108126Abstract: In a sensor, a light emitter outputs light with which a toner pattern on an image carrier or a surface material of the image carrier is irradiated, and a photodetector receives reflection light from the toner pattern or the surface material. The sensor light intensity control unit provides a control voltage to the light emitter and controls light intensity thereof. The density determining unit determines a toner density on the basis of output of the photodetector. Further, the density determining unit determines a reference control voltage of the light emitter to set as a predetermined value the output of the photodetector corresponding to the reflection light from the surface material, determines a correction parameter corresponding to the reference control voltage, determines a correction amount corresponding to the correction parameter and the toner density, and corrects the toner density on the basis of the correction amount.Type: GrantFiled: March 9, 2017Date of Patent: October 23, 2018Assignee: Kyocera Document Solutions, Inc.Inventors: Hiroki Tanaka, Atsushi Ishizaki
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Patent number: 9885972Abstract: An image forming includes an apparatus main body, a photoreceptor drum, a charging apparatus, a developing device, a transfer apparatus, a charging bias applying unit, a developing bias applying unit, a bias adjusting unit, and a print density measurement unit. The bias adjusting unit forms a non-charged area on a circumference surface of the photoreceptor drum and applies a developing bias constituted of a first electric potential to a developing roller to form a first toner image by an electric potential difference between the non-charged area and the developing roller. The charging bias applying unit forms a second toner image by an electric potential difference between the electric potential area and the developing roller. The charging bias applying unit decides a value of a charging bias corresponding to a target electric potential from measurement results of print densities of the first toner image and the second toner image.Type: GrantFiled: September 27, 2016Date of Patent: February 6, 2018Assignee: KYOCERA Document Solutions Inc.Inventors: Minoru Wada, Masaru Hatano, Masaki Kadota, Masahito Ishino, Keisuke Isoda, Atsushi Ishizaki
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Patent number: 9785084Abstract: An image forming apparatus includes an apparatus main body, a photoreceptor drum, a charging apparatus, a developing device, a transfer apparatus, a charging bias applying unit, a developing bias applying unit, a bias adjusting unit, and a print density measurement unit. The bias adjusting unit controls the charging bias applying unit to form a plurality of electric potential areas of electric potentials with different magnitudes. The bias adjusting unit applies a predetermined developing bias corresponding to a target electric potential to the developing roller, so as to form a plurality of toner images by electric potential differences between the developing bias and the plurality of electric potential areas. The bias adjusting unit decides a value of a charging bias corresponding to the target electric potential from measurement results of print densities of the plurality of toner images measured by the print density measurement unit.Type: GrantFiled: September 27, 2016Date of Patent: October 10, 2017Assignee: KYOCERA Document Solutions Inc.Inventors: Minoru Wada, Masaru Hatano, Masaki Kadota, Masahito Ishino, Keisuke Isoda, Atsushi Ishizaki
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Publication number: 20170261904Abstract: In a sensor, a light emitter outputs light with which a toner pattern on an image carrier or a surface material of the image carrier is irradiated, and a photodetector receives reflection light from the toner pattern or the surface material. The sensor light intensity control unit provides a control voltage to the light emitter and controls light intensity thereof. The density determining unit determines a toner density on the basis of output of the photodetector. Further, the density determining unit determines a reference control voltage of the light emitter to set as a predetermined value the output of the photodetector corresponding to the reflection light from the surface material, determines a correction parameter corresponding to the reference control voltage, determines a correction amount corresponding to the correction parameter and the toner density, and corrects the toner density on the basis of the correction amount.Type: ApplicationFiled: March 9, 2017Publication date: September 14, 2017Inventors: Hiroki Tanaka, Atsushi Ishizaki
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Patent number: 9740134Abstract: An image forming apparatus includes an apparatus main body, a photoreceptor drum, a charging apparatus, an exposure apparatus, a developing device, a charging bias applying unit, a developing bias applying unit, an image condition adjusting unit, and a print density measurement unit. The image condition adjusting unit forms a second electric potential region by applying the charging bias where a first differential electric potential is subtracted from a first tentative charging bias on a circumference surface of a photoreceptor drum, and forms a second toner image by an electric potential difference between the second electric potential region and a developing roller by applying the target electric potential. The image condition adjusting unit decides value of the charging bias corresponding to the target electric potential from measurement results of print densities of a first toner image and the second toner image measured by the print density measurement unit.Type: GrantFiled: November 8, 2016Date of Patent: August 22, 2017Assignee: KYOCERA Document Solutions Inc.Inventors: Minoru Wada, Masaru Hatano, Masaki Kadota, Masahito Ishino, Keisuke Isoda, Atsushi Ishizaki
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Publication number: 20170146922Abstract: An image forming apparatus includes an apparatus main body, a photoreceptor drum, a charging apparatus, an exposure apparatus, a developing device, a charging bias applying unit, a developing bias applying unit, an image condition adjusting unit, and a print density measurement unit. The image condition adjusting unit forms a second electric potential region by applying the charging bias where a first differential electric potential is subtracted from a first tentative charging bias on a circumference surface of a photoreceptor drum, and forms a second toner image by an electric potential difference between the second electric potential region and a developing roller by applying the target electric potential. The image condition adjusting unit decides value of the charging bias corresponding to the target electric potential from measurement results of print densities of a first toner image and the second toner image measured by the print density measurement unit.Type: ApplicationFiled: November 8, 2016Publication date: May 25, 2017Applicant: KYOCERA Document Solutions Inc.Inventors: Minoru WADA, Masaru HATANO, Masaki KADOTA, Masahito ISHINO, Keisuke ISODA, Atsushi ISHIZAKI
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Publication number: 20170097584Abstract: An image forming apparatus includes an apparatus main body, a photoreceptor drum, a charging apparatus, a developing device, a transfer apparatus, a charging bias applying unit, a developing bias applying unit, a bias adjusting unit, and a print density measurement unit. The bias adjusting unit controls the charging bias applying unit to form a plurality of electric potential areas of electric potentials with different magnitudes. The bias adjusting unit applies a predetermined developing bias corresponding to a target electric potential to the developing roller, so as to form a plurality of toner images by electric potential differences between the developing bias and the plurality of electric potential areas. The bias adjusting unit decides a value of a charging bias corresponding to the target electric potential from measurement results of print densities of the plurality of toner images measured by the print density measurement unit.Type: ApplicationFiled: September 27, 2016Publication date: April 6, 2017Applicant: KYOCERA Document Solutions Inc.Inventors: Minoru WADA, Masaru HATANO, Masaki KADOTA, Masahito ISHINO, Keisuke ISODA, Atsushi ISHIZAKI
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Publication number: 20170090334Abstract: An image forming includes an apparatus main body, a photoreceptor drum, a charging apparatus, a developing device, a transfer apparatus, a charging bias applying unit, a developing bias applying unit, a bias adjusting unit, and a print density measurement unit. The bias adjusting unit forms a non-charged area on a circumference surface of the photoreceptor drum and applies a developing bias constituted of a first electric potential to a developing roller to form a first toner image by an electric potential difference between the non-charged area and the developing roller. The charging bias applying unit forms a second toner image by an electric potential difference between the electric potential area and the developing roller. The charging bias applying unit decides a value of a charging bias corresponding to a target electric potential from measurement results of print densities of the first toner image and the second toner image.Type: ApplicationFiled: September 27, 2016Publication date: March 30, 2017Applicant: KYOCERA Document Solutions Inc.Inventors: Minoru WADA, Masaru HATANO, Masaki KADOTA, Masahito ISHINO, Keisuke ISODA, Atsushi ISHIZAKI
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Patent number: 9389568Abstract: A positioning member has a positioning surface that abuts an inner peripheral surface of an intermediate transfer belt to perform the positioning of the intermediate transfer belt with respect to a density detection sensor and a cleaning surface coated with a cleaning member having hardness lower than that of the positioning surface and abutting the inner peripheral surface of the intermediate transfer belt via the cleaning member. When a correction process is performed by a density correction section, the positioning surface of the positioning member 36 abuts the inner peripheral surface of the intermediate transfer belt, and when the correction process is not performed by the density correction section, the cleaning surface of the positioning member abuts the intermediate transfer belt.Type: GrantFiled: December 23, 2015Date of Patent: July 12, 2016Assignee: KYOCERA DOCUMENT SOLUTIONS INC.Inventor: Atsushi Ishizaki
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Publication number: 20160187829Abstract: A positioning member has a positioning surface that abuts an inner peripheral surface of an intermediate transfer belt to perform the positioning of the intermediate transfer belt with respect to a density detection sensor and a cleaning surface coated with a cleaning member having hardness lower than that of the positioning surface and abutting the inner peripheral surface of the intermediate transfer belt via the cleaning member. When a correction process is performed by a density correction section, the positioning surface of the positioning member 36 abuts the inner peripheral surface of the intermediate transfer belt, and when the correction process is not performed by the density correction section, the cleaning surface of the positioning member abuts the intermediate transfer belt.Type: ApplicationFiled: December 23, 2015Publication date: June 30, 2016Inventor: Atsushi Ishizaki
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Patent number: 9098040Abstract: An exposure portion scans, in an axial direction, light which is emitted from a light source based on image data of a document sheet, and applies the light to surfaces of image carriers, to form an electrostatic latent image on each image carrier. The cleaning member is disposed so as to contact with each image carrier and removes residual toner on each image carrier, to perform cleaning. The driving mechanism causes each image carrier to shuttle in the axial direction with a predetermined amplitude while the image carrier is driven to rotate. The detecting member detects positional information representing a position, in the axial direction, obtained when each image carrier shuttles. The control portion controls, based on a result of detection by the detecting member, a time when scanning on each of the image carriers by the exposure portion is to be started.Type: GrantFiled: December 20, 2013Date of Patent: August 4, 2015Assignee: KYOCERA Document Solutions Inc.Inventor: Atsushi Ishizaki
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Publication number: 20140184717Abstract: An exposure portion scans, in an axial direction, light which is emitted from a light source based on image data of a document sheet, and applies the light to surfaces of image carriers, to form an electrostatic latent image on each image carrier. The cleaning member is disposed so as to contact with each image carrier and removes residual toner on each image carrier, to perform cleaning. The driving mechanism causes each image carrier to shuttle in the axial direction with a predetermined amplitude while the image carrier is driven to rotate. The detecting member detects positional information representing a position, in the axial direction, obtained when each image carrier shuttles. The control portion controls, based on a result of detection by the detecting member, a time when scanning on each of the image carriers by the exposure portion is to be started.Type: ApplicationFiled: December 20, 2013Publication date: July 3, 2014Applicant: KYOCERA Document Solutions Inc.Inventor: Atsushi Ishizaki
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Patent number: 8548343Abstract: An image forming apparatus including an image carrying member, a detecting section, and a linear-speed deriving section. The image carrying member carries a toner image. The detecting section detects passages of a mark, provided on the image carrying member, at a plurality of predetermined detection positions. The linear-speed deriving section determines a linear speed of the image carrying member from times at which the detecting section detects the passage of the mark.Type: GrantFiled: February 17, 2011Date of Patent: October 1, 2013Assignee: Kyocera Document Solutions Inc.Inventors: Keisuke Isoda, Tadashi Ohba, Masaru Watanabe, Atsushi Ishizaki, Hiroki Tanaka
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Publication number: 20110206398Abstract: An image forming apparatus including an image carrying member, a detecting section, and a linear-speed deriving section. The image carrying member carries a toner image. The detecting section detects passages of a mark, provided on the image carrying member, at a plurality of predetermined detection positions. The linear-speed deriving section determines a linear speed of the image carrying member from times at which the detecting section detects the passage of the mark.Type: ApplicationFiled: February 17, 2011Publication date: August 25, 2011Applicant: KYOCERA MITA CORPORATIONInventors: Keisuke Isoda, Tadashi Ohba, Masaru Watanabe, Atsushi Ishizaki, Hiroki Tanaka